Safe use and emergency handling of high-pressure rubber hoses

High-pressure rubber hoses withstand pressures of tens of megapascals; failure can lead to serious safety accidents. Establishing safe usage guidelines and emergency response plans is a fundamental requirement of equipment management. This article summarizes the key points for the safe use of high-pressure rubber hoses.


I. Safety Control During the Selection Phase

The rated working pressure of the selected hose should be 1.2 to 1.5 times higher than the actual system pressure to avoid hose bursts due to pressure fluctuations. Confirm that the inner layer material of the hose is compatible with the transported medium to prevent corrosion or swelling. The operating environment temperature must be within the hose's rated range; high temperatures accelerate aging, while low temperatures easily cause embrittlement.

If the system's impact pressure exceeds the hose's specified working pressure, it will not only reduce its service life but may also lead to personal injury or equipment accidents. The hose's specified working pressure should generally not be less than the maximum system pressure; an increase of 20% is only permitted in cases of infrequent use.

II. Safety Precautions During Use

Do not use the hose beyond 80% of its rated pressure to avoid frequent pressure shocks (such as water hammer). Keep away from sharp objects or high-temperature components; if necessary, install a protective sleeve or heat insulation layer to prevent surface wear or high-temperature damage. When moving equipment, avoid dragging the hose directly to prevent connectors from detaching or the hose from being stretched and deformed.

Keep the hose surface away from corrosive materials (solvents, acids, alkalis, etc.). Do not drag the hose across rough surfaces or sharp objects. Do not pull forcefully if the hose is twisted or tangled.

III. Emergency Handling Procedures

If leakage or abnormal expansion is detected, immediately stop the machine and release the pressure. Do not perform maintenance under pressure. When replacing the hose, ensure that the system pressure is completely released to avoid residual pressure causing danger. Do not strike or disassemble connectors while pressurized.

IV. Safety Training Requirements

Every operator should be familiar with the operating procedures and carefully read the relevant operating manual and safety guidelines before performing any operation. It is recommended to develop an operating manual tailored to specific working conditions and conduct regular personnel training.

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